<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        .father {
            width: 200px;
            height: 200px;
            background-color: pink;
            margin-top: 20px;
        }

        .son {
            width: 100px;
            height: 100px;
            background-color: skyblue;
        }
    </style>
</head>
<body>
    <div id="app">
        <h3>v-model修饰符 .trim .number</h3>
        姓名：<input v-model.trim="username" type="text"><br>
        年纪：<input v-model.number="age" type="text"><br>


        <h3>@事件名.stop → 阻止冒泡</h3>
        <div @click="fatherFn" class="father">
            <div @click.stop="sonFn" class="son">儿子</div>
        </div>

        <h3>@事件名.prevent → 阻止默认行为</h3>
        <a @click.prevent href="http://www.baidu.com">阻止默认行为</a>
    </div>
    <script src="https://cdn.jsdelivr.net/npm/vue@2/dist/vue.js"></script>
    <script>
        const app = new Vue({
            el: '#app',
            data: {
                username: '',
                age: '',
            },
            methods: {
                fatherFn() {
                    alert('老父亲被点击了')
                },
                sonFn(e) {
                    // e.stopPropagation()
                    alert('儿子被点击了')
                }
            }
        })
    </script>
</body>
</html>